Open AccessDETERMINATION OF PHYSICAL AND ENGINEERING PROPERTIES OF TIGER NUT (Cyperus esculentus) RELEVANT TO ITS MECHANIZATION
Author(s) -
Tega A Emurigho,
Canice O.O Kabuo,
Arinze N Ifegbo
Publication year - 2020
Publication title -
international journal of engineering applied science and technology
Language(s) - English
Resource type - Journals
ISSN - 2455-2143
DOI - 10.33564/ijeast.2020.v05i08.012
Subject(s) - nut , tiger , cyperus , water content , moisture , bulk density , horticulture , mathematics , materials science , zoology , composite material , biology , environmental science , soil science , mechanical engineering , engineering , geotechnical engineering , algorithm , soil water
The physical and engineering propertiesof fresh and dried tiger nut (Cyperus esculentus)were determined at moisture content of 41.20%and 16.40% on wet basis respectively. The meanvalues for the three principal axes (length, widthand thickness) were 9.52mm, 8.16mm, and8.16mm for fresh tiger nut and 9.14mm, 7.72mmand 8.03mm for dried tiger nut respectively,showing a decrease with decrease in moisturecontent and was significantly different at p?0.05.The mean values of the bulk density, true densityand porosity of both fresh and dried tiger nutwere 0.59g/cm3, 0.97g/cm3, 40.61 and 0.58g/cm3,0.94g/cm3, 40.35 respectively and were notsignificantly different at p?0.05. The mean angleof repose and coefficient of static friction overformica, stainless steel, glass and plywood surfacesof fresh tiger nut were 50.11o, 2.73, 2.45, 2.22 and1.77 while that of dried tiger nut were 48.23o, 2.41,2.03, 2.11 and 2.00 respectively. The mean ruptureforce increased with compression force of 90.08Non the major axis to 116.88N for fresh tiger nutand from 120.55N to 161.10N for dried tiger nutand were significantly different at p?0.05. Theseproperties determined are necessary in the designand fabrication of hoppers, conveyor equipmentand the force tiger nut can withstand before it isruptured.